package com.me.demo.mjc1.reflection;

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;

public class ReflectionTest {
    public static void printConstructors(Class cl){
        Constructor[] constructors = cl.getDeclaredConstructors();

        for (Constructor c : constructors){
            String name = c.getName();
            System.out.print("  ");
            String modifiers = Modifier.toString(c.getModifiers());
            if (modifiers.length() > 0) System.out.print(modifiers + " ");
            System.out.print(name + "(");

            //print parameter types
            Class[] paramTypes = c.getParameterTypes();
            for (int j = 0; j < paramTypes.length; j++){
                if (j > 0) System.out.print(", ");
                System.out.print(paramTypes[j].getName());
            }
            System.out.println(");");
        }
    }

    public static void printMethods(Class cl){
        Method[] methods = cl.getDeclaredMethods();

        for (Method m : methods){
            Class retType = m.getReturnType();
            String name = m.getName();

            System.out.print("  ");
            //print modifiers, return type and method name
            String modifiers = Modifier.toString(m.getModifiers());
            if (modifiers.length() > 0) System.out.print(modifiers + " ");
            System.out.print(retType.getName() + " " + name + "(");
            //print parameter types
            Class[] paramTypes = m.getParameterTypes();
            for (int j = 0; j < paramTypes.length; j++){
                if (j > 0) System.out.print(", ");
                System.out.print(paramTypes[j].getName());
            }
            System.out.println(");");
        }
    }

    public static void printFields(Class cl){
        Field[] fields = cl.getDeclaredFields();

        for (Field f : fields){
            Class type =  f.getType();
            String name = f.getName();
            System.out.print("  ");
            String modifiers = Modifier.toString(f.getModifiers());
            if (modifiers.length() > 0) System.out.print(modifiers + " ");
            System.out.println(type.getName() + " " + name + ";");
        }
    }
}
